Gas Discharge Tubes CG7 Series RoHS CG7 Series Description The Littelfuse CG7 series GDT is a miniature surface mount device with a 1kA 8/20S surge rating. Its low insertion loss and thus low off- state capacitance makes it compatible with high bandwidth applications up to the GHz RF range. This GDTs crowbarring characteristic protects sensitive ICs from surges as defined in ITU K.20/21/45 Basic and Enhanced Recommendations, GR-1089-CORE first level lightning Port Type 1 and 3, and IEC 61000- nd 4-5 2 edition. It is hermetically sealed using non- radioactive materials Classes 1-3 and some Class 4 & 5 cases and is thus environmentally safe. Its 2.8mm Agency Approvals diameter size makes it the worlds smallest two- electrode single chamber GDT available. AGENCY AGENCY FILE NUMBER E128662 Features E320116 RoHS compliant and 1kA 8/20S surge Lead-free capability pulse as defined by IEC 61000- Excellent Surge Two Electrode GDT Graphical Symbol nd 4-5 2 edition Withstanding Capability Ultra Low capacitance Excellent response to (<0.3pF) fast rising transients. Voltage Range 75V Ultra Low Insertion to 470V Loss and low off-state capacitance for GHz UL recognized bandwidth compatibility Additional Information Ultra small devices offered in SMD package Applications Datasheet Resources SamplesSamples CG5 Series Set top box Data lines and Ethernet (up to 10GbE) Cable Modem Telecom line protection Embedded Multimedia Terminal Adapter Broadband equipment (EMTA) xDSL equipment, RF Connector including ADSL2, ADSL, VDSL, VDSL2 30a Multimedia over Coax bandplan compatible Alliance (MoCA) IAD (Integrated Access Base Station RF Device) antenna transmitter Aerospace and G.Fast 106MHz and Automotive 212 MHz bandplans compatible CATV/Broadband equipment 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/12/17Gas Discharge Tubes CG7 Series Electrical Characteristics Device Specifications (at 25C) Life Ratings DC Breakdown Impulse Impulse Insulation AC Dischage DC Impulse Capaci- Max Max Impulse in Volts Break- Break- Resistance Current Holdover Life tance Impulse Discharge (9 cycle 50Hz) (8/20s) down down In Voltage ( 100V/s) Discharge Current ( 1MHz) (100A) (<150ms) in Volts Volts (10/700s) Current (8/20s) Part ( 100V/s) ( 1kV/s) Number MIN TYP MAX MAX MIN MAX MIN MIN CG775 60 75 90 600 700 52V 1G 50V CG790 72 90 108 600 700 52V CG7120 96 120 144 600 700 80V CG7150 120 150 180 600 700 10 Shots 80V 1 ( 1kA) CG7200 160 200 240 600 700 135V 10 Shots 300 0.3pf 1A 2 ( 100A/4kV) Shots CG7230 186 230 276 600 700 135V 1G 100V 1 Shot CG7250 200 250 300 600 700 135V at 2kA CG7350 280 350 420 750 900 135V CG7400 360 400 480 850 1000 135V 1G 250V CG7470 376 470 564 900 1100 135V Notes: UL Pending for CG775 and CG7470. Typical Insertion Loss 1. 5 x (+) and 5 x (-) applications of 1kA 8/20s sec. 2. 5 x (+) and 5 x (-) applications of 100A 10/700s sec. 1.0GHz = 0.02dB Product Characteristics 1.4GHz = 0.03dB 1.8GHz = 0.05dB Device Tin Plated 17.5 12.5 Materials Microns 2.0GHz = 0.06dB Construction: Ceramic Insulator 2.4GHz = 0.07dB Storage and Operational -40 to +90C Temperature 2.8GHz = 0.08dB 3.1GHz = 0.09dB 3.5GHz = 0.10dB Voltage Vs. Time Characteristic 4.0GHz = 0.12dB Note: Insertion data for customer reference only, application testing needed for verification. Max dynamic 800 breakover voltage V-I Characteristic Curve 600 Characteristics of Gas Plasma -response to transient condition Arc Voltage Point at which gas tube is at I Axis lowest impedance and 400 fully conductive. Typical arc voltage at about Hold over voltage 10 to 12 Volts 200 V Axis Max Dynamic Breakover Voltage 0 (Impulse Breakdown) 0200 400600 8001000 1200 Point at which gas tube is at lowest impedance and Time (ns) fully conductive Note: Tested per 1kV/s waveform Holdover Voltage Device resets to a high impedance state once the voltage across the device falls below this level. 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/12/17 Voltage (V)